drivers/net/wireless/realtek/rtlwifi/rtl8821ae/led.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/led.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/realtek/rtlwifi/rtl8821ae/led.c
Extension
.c
Size
4725 bytes
Lines
192
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (rtlpriv->ledctl.led_opendrain) {
			ledcfg &= 0x90; /* Set to software control. */
			rtl_write_byte(rtlpriv, REG_LEDCFG2, (ledcfg|BIT(3)));
			ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
			ledcfg &= 0xFE;
			rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
		} else {
			ledcfg &= ~BIT(6);
			rtl_write_byte(rtlpriv, REG_LEDCFG2,
				       (ledcfg | BIT(3) | BIT(5)));
		}
		break;
	case LED_PIN_LED1:
		ledcfg = rtl_read_byte(rtlpriv, REG_LEDCFG1);
		ledcfg &= 0x10; /* Set to software control. */
		rtl_write_byte(rtlpriv, REG_LEDCFG1, ledcfg|BIT(3));
		break;
	default:
		rtl_dbg(rtlpriv, COMP_ERR, DBG_LOUD,
			"switch case %#x not processed\n", pin);
		break;
	}
}

void rtl8812ae_sw_led_off(struct ieee80211_hw *hw, enum rtl_led_pin pin)
{
	u16 ledreg = REG_LEDCFG1;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	switch (pin) {
	case LED_PIN_LED0:
		ledreg = REG_LEDCFG1;
		break;

	case LED_PIN_LED1:
		ledreg = REG_LEDCFG2;
		break;

	case LED_PIN_GPIO0:
	default:
		break;
	}

	rtl_dbg(rtlpriv, COMP_LED, DBG_LOUD,
		"In SwLedOff,LedAddr:%X LEDPIN=%d\n",
		ledreg, pin);
	/*Open-drain arrangement for controlling the LED*/
	if (rtlpriv->ledctl.led_opendrain) {
		u8 ledcfg = rtl_read_byte(rtlpriv, ledreg);

		ledreg &= 0xd0; /* Set to software control.*/
		rtl_write_byte(rtlpriv, ledreg, (ledcfg | BIT(3)));

		/*Open-drain arrangement*/
		ledcfg = rtl_read_byte(rtlpriv, REG_MAC_PINMUX_CFG);
		ledcfg &= 0xFE;/*Set GPIO[8] to input mode*/
		rtl_write_byte(rtlpriv, REG_MAC_PINMUX_CFG, ledcfg);
	} else {
		rtl_write_byte(rtlpriv, ledreg, 0x28);
	}
}

static void _rtl8821ae_sw_led_control(struct ieee80211_hw *hw,
				      enum led_ctl_mode ledaction)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	enum rtl_led_pin pin0 = rtlpriv->ledctl.sw_led0;
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));

	switch (ledaction) {
	case LED_CTL_POWER_ON:
	case LED_CTL_LINK:
	case LED_CTL_NO_LINK:
		if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE)
			rtl8812ae_sw_led_on(hw, pin0);
		else
			rtl8821ae_sw_led_on(hw, pin0);
		break;
	case LED_CTL_POWER_OFF:
		if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE)
			rtl8812ae_sw_led_off(hw, pin0);
		else
			rtl8821ae_sw_led_off(hw, pin0);
		break;
	default:
		break;
	}
}

void rtl8821ae_led_control(struct ieee80211_hw *hw,

Annotation

Implementation Notes